SC28L92_7 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 07 — 19 December 2007 53 of 73
NXP Semiconductors
SC28L92
3.3 V/5.0 V Dual Universal Asynchronous Receiver/Transmitter
[1] The following conditions apply:
a) Parameters are valid over specified temperature and voltage range.
b) All voltage measurements are referenced to ground. For testing, all inputs swing between 0.4 V and 3.0 V with a transition time of
5 ns maximum. For X1/CLK this swing is between 0.4 V and 0.8V
CC
. All time measurements are referenced at input voltages of 0.8 V
and 2.0 V, and output voltages of 0.8 V and 2.0 V, as appropriate.
c) Typical values are at 25 °C, typical supply voltages, and typical processing parameters.
[2] Test conditions for outputs: C
L
= 125 pF, except interrupt outputs. Test conditions for interrupt outputs: C
L
= 125 pF,
constant current source = 2.6 mA.
[3] Input port pins have active pull-up transistors that will source a typical 2 µA from V
CC
when they are at V
SS
. Input port pins at V
CC
source
0.0 µA.
[4] All outputs are disconnected. Inputs are switching between CMOS levels of V
CC
− 0.2 V and V
SS
+ 0.2 V.
Table 66. Static characteristics, 3.3 V operation
[1]
V
CC
= 3.3 V
±
10 %; T
amb
=
−
40
°
Cto+85
°
C; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
IL
input LOW voltage - 0.65 0.2V
CC
V
V
IH
input HIGH voltage 0.8V
CC
1.7 - V
V
OL
output LOW voltage I
OL
= 2.4 mA - 0.2 0.4 V
V
OH
output HIGH voltage except open-drain outputs;
I
OH
= −400 µA
[2]
V
CC
− 0.5 V
CC
− 0.2 - V
I
I(1XPD)
Power-down mode input
current on pin X1/CLK
V
I
= 0 V to V
CC
−0.5 +0.05 +0.5 µA
I
IL(X1)
operating input LOW current
on pin X1/CLK
V
I
=0V −80 - 0 µA
I
IH(X1)
operating input HIGH current
on pin X1/CLK
V
I
=V
CC
0- 80µA
I
I
input leakage current V
I
= 0 V to V
CC
all except input port pins
[3]
−0.5 +0.05 +0.5 µA
input port pins
[3]
−8 +0.5 +0.5 µA
I
OZH
output off current HIGH,
3-state data bus
V
I
=V
CC
- - 0.5 µA
I
OZL
output off current LOW, 3-state
data bus
V
I
=0V −0.5 - - µA
I
ODL
open-drain output LOW current
in off state
V
I
=0V −0.5 - - µA
I
ODH
open-drain output HIGH
current in off state
V
I
=V
CC
- - 0.5 µA
I
CC
power supply current CMOS input levels
[4]
operating mode - - 5 mA
Power-down mode - ≤1 5.0 µA
